Can someone explain why I was banned?

So I was playing a online game that has a lot of trash talkers and one of them invited me to a party and I joined and one of the two called me a inappropriate word that people are not allowed to say anymore so I messaged the one and asked who and he was supper chill about it and we where talking for a while and then I get something that says cannot send messages and this ig was because when I asked who was saying that word I said a censored version of the word and I got a 5 day ban and 3 strikes from one incident can somebody explain?

:)